Forty-six Square Metres doesn't normally become a house. With the largest houses in the world and ever-increasing suburban sprawl, we need to consider building smaller and more space-efficient homes. Showcasing 45 examples, Stuart Harrison explores how the constraints of space often result in the most innovative houses - bigger is not better.Stuart Harrison is an architect, communicator and architectural advocate. He is director of the award-winning firm Harrison and White Architects (HAW), based in Brunswick, Melbourne.